Error qtcore/qcoreapplication.h no such file or directory

error qtcore/qcoreapplication.h no such file or directory

/usr/include/c++/7/cstdlib:75:15: fatal error: stdlib.h: No such file or directory. sudo apt install g++ g++-5 libmosquittopp-dev. I have followed the steps in your article, but I keep getting the same error: QGLWidget: No such file or directory. Is QGLWidget outdated? Reply. The error messages show that your compiler could not find. You need to install the standard C++ development files in your system. error qtcore/qcoreapplication.h no such file or directory

Thread: Qt Creator produces "No such file or directory" error with existing file

QuoteOriginally Posted by Coolname007View Post

Hmm.I see. I wasn't aware that the INCLUDEPATH variable effects the #include declarations in that way.
In the documentation, on the "qmake Variable Reference" page, error qtcore/qcoreapplication.h no such file or directory, it says the following about the INCLUDEPATH variable:



I interpreted that to mean "it specifies the additional include directories which should be searched when compiling the project".
But now, I see, the emphasis should be on the #include part.

I posted about this same problem on the qtforum.org forums, and was basically just told the same thing.

However, while I was trying that, I discovered the real problem must have been in the .pro.user file I was using before, since when I re-setup the project for the Desktop platform (because I had opened it in my other OS - Ubuntu - installed as a dualboot on the same development computer, and the .pro.user settings were different), and the file was rewritten, I have now gotten past that error. So it seems it must have been an issue with the settings. I noticed that this time when I set it up, I chose the "None" option for the build configuration, instead of choosing "One Debug and One Release for each Qt version" like I had the last time (I believe.), so maybe that had something to do with it, I don't know. Anyway, its fixed now.

Thanks.

#includenext stdlib.h.

The implementation of this function is in the qtmfc.cpp source file.To be able to create Qt widgets in the initialization of the MFC application we.

I'm pretty sure this was related to something else and not the package./usr/include/qt/QtWidgets/qwidget.h:67:7: Anmerkung: Vorwrtsdeklaration von.

[metaqt5][PATCH] qtbase: Replace isystem with I @ 20180215 4:38 Khem /usr/include/c++/7.3.0/cstdlib:75:15: fatal error: stdlib.h: No such file or.

If you encountered problems while installing the product or the installation open msvcmake.bat in Rational Rhapsody installation path \Share\etc:.


About the XL C++ Compiler anyone could let me know WTF it is please? On Linux I use this IDE which is a custom build of Eclipse CDT and their.

Executing: C:\Tools\Rhapsody\8.2\Share\etc\msvcmake.bat msbuild.mak but no Visual Studio installation was not found in the directory %VSPATH%.

It seems that compiler can open QApplication is it the same as qapplication.h? but can't open the first #include file 'qtwidgetsglobal.h' in.

Eclipse is an integrated development environment IDE used in computer programming.Eclipse CDT for C/C++ and Eclipse PDT for PHP among others.

metaqt5 is a Yocto compatible meta layer that provides recipes for Qt modules.This topic provides common guidelines how you can use metaqt5.

VSCode IntelliSense problem with QT 6.2.2 on MacOS.20th December 2021 c++ cmake macos qt6 visualstudiocode.I know there is a lot of similar.

The project was created at the default location C:\Qt\Qt5.0.0\Tools\QtCreator\bin I just added one main.cpp source file with the following.

Hello I'm very new to Qt.I just installled Qt5.0.0 & MS Visual C++ Comilper 10.0 on my compuer running Win7 I tried to compile and run a.

/usr/include/qt5/QtSolutions/qtsingleapplication.h:44:10: fatal error: QApplication: No such file or directory 44 #include QApplication

Trying to build I get: In file included from mapview.cpp:29:0: mapview.h:32:29: fatal error: QtWidgets/QWidget: No such file or directory.

Hmm.getting a compiler error for #include not sure why it can't seem to find this??? When I searched my computer I found a few qwidget.h.

1 Answer A: I suggest you should check your project settings under C++ check include directories and make sure it points to where.h file.

I have a problem using CMake and Qt5.It moves forward but still crashes inside Qt's file can't find QtWidgets/qtwidgetsglobal.h.In both.

Does not compile on Ubuntu 18.04 stdlib.h: No such file or directory.from /usr/include/x8664linuxgnu/qt5/QtWidgets/qtwidgetsglobal.h:43.

I realized that the CDT IDE has some Qt features built in.E.g.when I create a new C/C++ project I can choose to select a Qt Application.

Hi i spent the whole day to just run a small application and i got problem after problem.i just started to install qt with the help of.

Hi i have this problem on Windows: Installed MSVs 2010 ultimate Qt 5 When creating an Empty Qt Project add new c++ source and just put.

We provide universal Intel+ARM binaries for macOS.This avoids issues on Linux where forking a process from a large application is more.

Cannot open source file QtWidgets/QApplication solution Solution: Rightclick on the project Project Properties Property C/C++ General.

Cannot open source file QtWidgets/QMainWindow.I've been trying to setup Qt for use with Visual Studio 2019 as I already like using VS.

If you already have XCode installed do not install OSXGCCInstaller.In combination the software can cause issues that are difficult to.

[oe] [metaqt5] [problem] Qt SDK Issue cstdlib:75:15: fatal error: stdlib.h: No such file or directory.Mustafa zelikrs mozcelikors at.

hi Experts I'm a new to QT.Now I have met a problem when trying to build a simple program of crosscompile using xilinx arm compiler.

The Idea: My idea is to have a Qt SDK along my image unknown bios error error code 410e I can source linuxgnueabi/usr/include/qt5/QtWidgets/qtwidgetsglobal.h:43.

hi Experts I'm a new to QT.Now I have met a problem when trying to build a simple program of crosscompile using xilinx arm compiler.

hi Experts I'm a new to QT.Now I have met a problem when trying to build a simple program of crosscompile using xilinx arm compiler.

Have Qt and it's sources installed; Create a cpp file and include If that doesn't fix it for you then you're hitting some new issue.

The real problem here is that isystem /usr/include changes the /gcc/include/c++/6.2.0/cstdlib:75:25: fatal error: stdlib.h: No such.

Eclipse CDTC/C++ Development Tooling.Eclipse is a error qtcore/qcoreapplication.h no such file or directory opensource crossplatform IDE in the programming arena.It offers users a.

Brief Issue Summary cmaketools fails to find Qt header files./users/aw/projects/rectalogic/vscodecmake/qt/6.2.2/macos/lib/qtwidgets.

I still have the same problem: fatal error: QWidget: No such file or directory #include I installed rosindigoqt but it didn't help.

When I use Visual Studio 2019 and create a new Qt Widgets Application the mainWindow class's header file looks something like this:

How to create a QML extension in C++ using CMake in Qt 6.2 c++ qt qml cmake qt6 VSCode IntelliSense problem with QT 6.2.2 on MacOS.

gcc c viewer.cxx In file included from viewer.cxx:2:0: viewer.h:5:45: fatal error: QWidget: No such file or directory compilation.

This occurs throughout Qt in later versions with newer compilers.The way to fix it is to edit mkspecs/common/gccbase.conf.Change.

Project Source File /usr/include/c++/6.1.1/cstdlib:75:25: fatal error: stdlib.h: No such file or directory #includenext stdlib.h.

Description of problem: When building a Qt application /usr/include/c++/10/cstdlib:75:15: fatal error: stdlib.h: No such file or.

Cannot open include file: 'QtWidgets/qtwidgetsglobal.h': No such file or directory #1.Open.Bluscream opened this issue on Nov 5.

I've previously had Qt 5.7.0 installed and working a treat Files x86\Microsoft Visual Studio 14.0\VC\vcvarsall.bat didn't found.

Cannot open :/qtproject.org/qmime/freedesktop.org.xml: No such file or directory.You need to fix why this file cannot be found.

#include QtWidgets/qtwidgetsglobal.h #include QtCore/qcoreapplication.h cannot open source file QtGui/qwindowdefs.h C/C++1696.

Description of problem: When building a Qt application a compile failure occurs because an include of cstdlib cannot be found.

6 This file is part of the QtWidgets module of the Qt Toolkit.7.8 QTBEGINLICENSE:LGPL 40 #include QtWidgets/qtwidgetsglobal.h.

Description of problem: Error qtcore/qcoreapplication.h no such file or directory building a Qt application a compile failure occurs because an include of cstdlib cannot be found.

Hello everyone This is my first post to this mailing list.error: stdlib.h: No such file or directory #includenext stdlib.h.

Yarn supports the following semver range: 4.8.0

I'm unable to compile my first programme it says "/usr/local/qt4/include/QtCore/qstring.h:54:20: fatal error: string: No such file or directory"

Hello i'm new to qt i'm just rying to compile an example code but it show error here is my code @#include <QtGui/QApplication>
#include <QtGui/QWidget>

int main(int argc, char *argv[])
{
QApplication app(argc, argv);

}@ HERE IS THE ERROR @In file included from /usr/local/qt4/include/QtCore/qobject.h:48:0,
from /usr/local/qt4/include/QtCore/qcoreapplication.h:45,
from /usr/local/qt4/include/QtGui/qapplication.h:45,
from /usr/local/qt4/include/QtGui/QApplication:1,
from n_0.c:1:
/usr/local/qt4/include/QtCore/qstring.h:54:20: fatal error: string: No such file or directory

compilation terminated.
make: *** [n_0.o] Error 1
@ THIS ERROR IS QUITE BIG Adsl crc errors I PASTED only the essential part needed to solve my problem here


Thread: Qt4 errors

Hello every one, error qtcore/qcoreapplication.h no such file or directory, I am new to LINUX/ubuntu and QT4 programming, I installed then necessary libraries qt4lib-core qt4lib-gui, qt4lib and so on.

I tried a hello world program.

#include <qt4/QtGui/qapplication.h>
#include <qt4/QtGui/qpushbutton.h>


int main( int argc, char **argv )
{
QApplication a( argc, argv );

QPushButton hello( "Hello world!", 0 );
hello.resize( 100, 30 );

a.setMainWidget( &hello );
hello.show();
return a.exec();
}

but I couldn't compile because of errors. which were as follows


/usr/include/qt4/QtGui/qapplication.h:47:37: error: QtCore/qcoreapplication.h: No such file or directory
/usr/include/qt4/QtGui/qapplication.h:48:31: error: QtGui/qwindowdefs.h: No such file or directory
/usr/include/qt4/QtGui/qapplication.h:49:27: error: QtCore/qpoint.h: No such file or directory
/usr/include/qt4/QtGui/qapplication.h:50:26: error: QtCore/qsize.h: No such file or directory
/usr/include/qt4/QtGui/qapplication.h:51:27: error: QtGui/qcursor.h: No such file or directory
In file included from hello.cpp:8:
/usr/include/qt4/QtGui/qpushbutton.h:47:35: error: QtGui/qabstractbutton.h: No such file or directory
In file included from hello.cpp:7:
/usr/include/qt4/QtGui/qapplication.h:64: error: ‘QT_BEGIN_HEADER’ does not name a type
/usr/include/qt4/QtGui/qapplication.h:84: error: function definition does not declare parameters
/usr/include/qt4/QtGui/qapplication.h:363: error: ‘QT_END_HEADER’ does not name a error qtcore/qcoreapplication.h no such file or directory In file included from hello.cpp:8:
/usr/include/qt4/QtGui/qpushbutton.h:57: error: function definition does not declare parameters
hello.cpp:11: error: expected constructor, destructor, or type conversion before ‘int’

There is a folder called /usr/include/qt4 which has the folders QtGui etc.
what should I do to remove the errors

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